<template>

  <el-upload
    class="avatar-uploader"
    action=""
    :show-file-list="false"
    :before-upload="beforeAvatarUpload"
    :http-request="onUpload"
  >
    <img v-if="value" :src="value" class="avatar">
    <i v-else class="el-icon-plus avatar-uploader-icon" />
  </el-upload>
</template>

<script>

import COS from 'cos-js-sdk-v5'

export default {
  props: {
    value: {
      type: String,
      default: null
    }
  },
  methods: {
    onUpload(xxx) {
      //  实例化cos({id, key})
      const cos = new COS({
        SecretId: 'AKIDiO2c6XuCLPKCxYyGoWK7lNzX5YvAawQ7',
        SecretKey: 'mgbIm3AUiyJakoiS0Pj1CIF5udTCiKtY'
      })

      cos.uploadFile({
        Bucket: 'web-hr-1324718854',
        Region: 'ap-guangzhou',
        Key: xxx.file.name,
        SliceSize: 1024 * 1024 * 5,
        StorageClass: 'STANDARD',
        Body: xxx.file
      },
      (err, data) => {
        console.log(err)

        console.log(data)
        console.log('上传成功')
      })
      console.log(xxx)
    },

    // 上传前用来校验文件
    beforeAvatarUpload(file) {
      // 判断文件的类型， 阻止上传非法文件
      const isJPG = ['image/jpeg', 'image/gif', 'image/bmp', 'image/png'].includes(file.type)
      const isLt2M = file.size / 1024 / 1024 < 5

      if (!isJPG) {
        this.$message.error('上传头像图片只能是 JPG 格式!')
        return false
      }
      if (!isLt2M) {
        this.$message.error('上传头像图片大小不能超过 2MB!')
        return false
      }
      return isJPG && isLt2M
    }
  }
}
</script>

<style>
  .avatar-uploader .el-upload {
    border: 1px dashed #d9d9d9;
    border-radius: 6px;
    cursor: pointer;
    position: relative;
    overflow: hidden;
  }
  .avatar-uploader .el-upload:hover {
    border-color: #409EFF;
  }
  .avatar-uploader-icon {
    font-size: 28px;
    color: #8c939d;
    width: 178px;
    height: 178px;
    line-height: 178px;
    text-align: center;
  }
  .avatar {
    width: 178px;
    height: 178px;
    display: block;
  }
</style>
